Add a way to make time-moment not use am-time-ago

`am-time-ago` automatically displays a time in the form "3 hours ago".
This behaviour is used by the time-moment directive when displaying
times from within the last day.

This commit adds a way to disable this behaviour and force the actual
time/date to be shown.

Change-Id: Idfc9113cc818e7e95d874513a81278779c2f1e8a

src/app/util/directive/time_moment.js

@@ -28,7 +28,8 @@ angular.module('sb.util').directive('timeMoment',
             scope: {
                 eventdate: '=',
                 shortDate: '=',
-                formatString: '='
+                formatString: '=',
+                noTimeAgo: '@'
             },
             controller: function ($scope) {
 
@@ -36,8 +37,12 @@ angular.module('sb.util').directive('timeMoment',
                  * Helper method to update the needs_timeago propery
                  */
                 function updateTimeAgo() {
-                    $scope.needsTimeAgo =
-                        DateUtil.needsTimeAgo($scope.eventdate);
+                    if (!$scope.noTimeAgo) {
+                        $scope.needsTimeAgo =
+                            DateUtil.needsTimeAgo($scope.eventdate);
+                    } else {
+                        $scope.needsTimeAgo = false;
+                    }
                 }
 
                 var unwatch = $scope.$watch(updateTimeAgo);